diff --git a/tools/build.py b/tools/build.py
index f88bf339b97..d016cc8225e 100644
--- a/tools/build.py
+++ b/tools/build.py
@@ -184,7 +184,7 @@
                 skipped.append(tt_id)
             else:
                 try:
-                    notify = TerminalNotifer(options.verbose, options.silent)
+                    notify = TerminalNotifier(options.verbose, options.silent)
                     mcu = TARGET_MAP[target]
                     profile = extract_profile(parser, options, toolchain)
                     if options.source_dir: